Seeing a TP-Link router red light usually indicates a connectivity issue or hardware malfunction. This warning light means your router is not properly connected to the internet or is experiencing technical difficulties. Common causes include a loose cable, service outage, or incorrect configuration. To fix the TP-Link router red light, check all cable connections, restart your modem and router, and ensure your ISP service is active. If the issue persists, a factory reset or firmware update might be needed. https://tplnklogin.com/tp-link-router-red-light/